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• W2897524775 abstract "Aims. Magnetic reconnection in large Harris-type reconnecting current sheets (RCSs) with a single X-nullpoint often leads to the occurrence of magnetic islands with multiple O- and X-nullpoints. Over time these magnetic islands become squashed, or coalescent with two islands merging, as has been observed indirectly during coronal mass ejection and by in-situ observations in the heliosphere and magnetotail. These points emphasise the importance of understanding the basic energising processes of ambient particles dragged into current sheets with magnetic islands of different configuration. Methods. Trajectories of protons and electrons accelerated by a reconnection electric field are investigated using a test particle approach in RCSs with different 3D magnetic field topologies defined analytically for multiple X- and O-nullpoints. Trajectories, densities, and energy distributions are explored for 10 6 thermal particles dragged into the current sheets from different sides and distances. Results. This study confirms that protons and electrons accelerated in magnetic islands in the presence of a strong guiding field are ejected from a current sheet into the opposite semiplanes with respect to the midplane. Particles are found to escape O-nullpoints only through the neighbouring X-nullpoints along (not across) the midplane following the separation law for electrons and protons in a given magnetic topology. Particles gain energy either inside O-nullpoints or in the vicinity of X-nullpoints that often leads to electron clouds formed about the X-nullpoint between the O-nullpoints. Electrons are shown to be able to gain sub-relativistic energies in a single magnetic island. Energy spectra of accelerated particles are close to power laws with spectral indices varying from 1.1 to 2.4. The more squashed the islands the larger the difference between the energy gains by transit and bounced particles, which leads to their energy spectra having double maxima that gives rise to fast-growing turbulence. Conclusions. Particles are shown to gain the most energy in multiple X-nullpoints between O-nullpoints (or magnetic islands). This leads to the formation of electron clouds between magnetic islands. Particle energy gains are much larger in squashed islands than in coalescent ones. In summary, particle acceleration by a reconnection electric field in magnetic islands is much more effective than in an RCS with a single X-nullpoint." @default.
• W2897524775 created "2018-10-26" @default.
• W2897524775 creator A5057483733 @default.
• W2897524775 creator A5085678124 @default.
• W2897524775 date "2018-12-01" @default.
• W2897524775 modified "2023-10-13" @default.
• W2897524775 title "Particle acceleration in coalescent and squashed magnetic islands" @default.
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• W2897524775 cites W1967079055 @default.
• W2897524775 cites W1970555098 @default.
• W2897524775 cites W1970824263 @default.
• W2897524775 cites W1971643559 @default.
• W2897524775 cites W1973980219 @default.
• W2897524775 cites W1983763467 @default.
• W2897524775 cites W1983799654 @default.
• W2897524775 cites W1986391976 @default.
• W2897524775 cites W1987214136 @default.
• W2897524775 cites W1989331385 @default.
• W2897524775 cites W1991151832 @default.
• W2897524775 cites W1994548716 @default.
• W2897524775 cites W1995937548 @default.
• W2897524775 cites W1995979395 @default.
• W2897524775 cites W1997665194 @default.
• W2897524775 cites W1998035331 @default.
• W2897524775 cites W2004545686 @default.
• W2897524775 cites W2005093797 @default.
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• W2897524775 cites W2023534999 @default.
• W2897524775 cites W2023914143 @default.
• W2897524775 cites W2027046724 @default.
• W2897524775 cites W2032365986 @default.
• W2897524775 cites W2033650828 @default.
• W2897524775 cites W2036020135 @default.
• W2897524775 cites W2039650410 @default.
• W2897524775 cites W2045740653 @default.
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• W2897524775 cites W2054463323 @default.
• W2897524775 cites W2058447792 @default.
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• W2897524775 cites W2071313458 @default.
• W2897524775 cites W2075107901 @default.
• W2897524775 cites W2083009867 @default.
• W2897524775 cites W2083807418 @default.
• W2897524775 cites W2087710747 @default.
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• W2897524775 doi "https://doi.org/10.1051/0004-6361/201833599" @default.
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